More than a dozen students in that school abroad to study medicine last year.
A. sent
B. were sent
C. had sent
D. had been sent
网友回答
A. sent
(答案→)B. were sent
C. had sent
D. had been sent
解析：考查时态。本题的关键是时间状语last year,该时间状语是一般过去时最典型的时间状语。AC两项没有使用被动语态。本题又没有体现出过去的过去的过去完成时的用法。句意：去年那个学校的很多学生都被送到国外学习了。故B正确。